Emetophilia

Emetophilia is a paraphilia in which an individual is sexually aroused by vomiting or observing others vomit,[1] also referred to as a vomit fetish. Some emetophiles put emetophilia into practice by actually vomiting, especially on a partner. This practice is sometimes called a "Roman shower", after the commonly supposed belief in the frequent induction of vomiting at Roman feasts.

Some emetophiles find the act of vomiting arousing; for them, the sequence of "spasm, ejaculation, relief" in vomiting is erotically charged. Other emetophiles are aroused by seeing, hearing, and/or smelling others vomit. Some desire a partner who will vomit on them, while others wish to induce vomiting in a partner, or even force them to vomit (wanting to be vomited on may be related to a desire to be dominated, while wanting to make someone else vomit may stem from a desire to dominate the partner - see erotic humiliation). Emetophiles may have any combination of these desires simultaneously.

This is not to be confused although can in many ways be connected with a similar behavioral performance, Bulimia Nervosa.